Charlie Sheen threatens Denise Richards?

Charlie Sheen has been threatening his ex-wife Denise Richards.

The troubled actor apparently lashed out at the actress because she intentionally put distance between Sheen, 45, and daughters Sam, 7, and Lola, 5, as he continues to meltdown in the public eye.

“He wanted to pose in a picture with the girls a few days ago,” a source told Us Weekly magazine.

“And when Denise refused, he threatened her with physical harm.

“Denise is constantly trying to shield them from their dad’s problems.

“But it was becoming harder.”